I owned Arabians for about 30 years, they are very people-oriented, and they're very smart and catch on quick. Most will not put up with rough or abusive training methods, they have wonderful dispositions and are extremely versatile and are good at so many things.....western, English, trail, endurance, dressage. I can't say enough good about them. My Arabs were so easy to work with, they would come when I called, and were calm and quiet enough to be used as lesson horses.
There are Polish Arabs, Spanish Arabs, Egyptian, and Crabbet bred (being from England), as well as Russian which is actually a blending of Polish and Egyptian lines. The Crabbet and Polish Arabs, in general (there are always exceptions) tend to be very athletic and excel in performance. The Spanish are known for gorgeous large eyes and beauty, and Egyptians are very typey and exotic and tend to be seen more in the halter arena (altho the Babson-bred Egyptians are super-athletic and very calm horses).
Hope that helped some! lol.